Home / 140,168.10-193,685-99,811.80

Finding the Fourth Proportional to 140,168.10, 193,685 and 99,811.80

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Solution

The fourth proportional to 140,168.10, 193,685 and 99,811.80 is: 137,920.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,168.10 : 193,685 = 99,811.80 : x
  2. Step 2: Convert to fraction form
    140,168.10/193,685 = 99,811.80/x
  3. Step 3: Cross multiply
    140,168.10x = 193,685 × 99,811.80
  4. Step 4: Simplify right side
    140,168.10x = 19,332,048,483
  5. Step 5: Solve for x
    x = 19,332,048,483/140,168.10
  6. Step 6: Final answer
    x = 137,920.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.